Bump civicrm/civicrm-core from 5.81.0 to 5.81.1

Bumps [civicrm/civicrm-core](https://github.com/civicrm/civicrm-core) from 5.81.0 to 5.81.1.
- [Changelog](https://github.com/civicrm/civicrm-core/blob/5.81.1/release-notes.md)
- [Commits](civicrm/civicrm-core@5.81.0...5.81.1)

---
updated-dependencies:
- dependency-name: civicrm/civicrm-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>